// Copyright (c) 2009 The Chromium Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

package org.chromium.debug.ui;

import java.util.List;

import org.chromium.debug.core.model.Messages;

import org.eclipse.jface.dialogs.Dialog;

import org.eclipse.jface.dialogs.IDialogConstants;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Event;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Listener;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Table;

import org.eclipse.swt.widgets.TableColumn;

import org.eclipse.swt.widgets.TableItem;

/**

 * A dialog where users select which Chromium tab to attach to.

 */

class ChromiumTabSelectionDialog extends Dialog {

  private final List<String> urls;

  private Table table;

  private int selectedLine = -1;

  ChromiumTabSelectionDialog(Shell shell, List<String> urls) {

    super(shell);

    this.urls = urls;

  }

  @Override

  protected void configureShell(Shell shell) {

    super.configureShell(shell);

    shell.setText(Messages.ChromiumTabSelectionDialog_DialogTitle);

  }

  @Override

  public int open() {

    return super.open();

  }

  @Override

  public void create() {

    super.create();

    updateOkButton();

  }

  @Override

  protected Control createDialogArea(Composite parent) {

    Composite composite = (Composite) super.createDialogArea(parent);

    Label label = new Label(composite, SWT.NONE);

    label.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));

    label.setText(Messages.ChromiumTabSelectionDialog_TableTitle);

    table = new Table(composite, SWT.VIRTUAL | SWT.BORDER | SWT.SINGLE);

    table.setHeaderVisible(true);

    table.setLinesVisible(true);

    table.setItemCount(10);

    final TableColumn urlColumn = new TableColumn(table, SWT.NONE);

    urlColumn.setText(Messages.ChromiumTabSelectionDialog_UrlColumnName);

    urlColumn.setWidth(400);

    table.addListener(SWT.SetData, new Listener() {

      public void handleEvent(Event event) {

        if (table.isDisposed()) {

          return;

        }

        processData(event);

      }

      private void processData(Event event) {

        TableItem item = (TableItem) event.item;

        int index = table.indexOf(item);

        if (index < urls.size()) {

          item.setText(urls.get(index));

          GridData data = new GridData();

          data.grabExcessHorizontalSpace = true;

          item.setData(data);

          if (index == 0) {

            table.select(0);

          }

        }

      }

    });

    table.addSelectionListener(new SelectionListener() {

      public void widgetDefaultSelected(SelectionEvent e) {

        okPressed();

      }

      public void widgetSelected(SelectionEvent e) {

      }

    });

    table.setItemCount(urls.size());

    table.clearAll();

    return composite;

  }

  private void updateOkButton() {

    this.getButton(IDialogConstants.OK_ID).setEnabled(urls.size() != 0);

  }

  @Override

  protected void okPressed() {

    selectedLine = table.getSelectionIndex();

    super.okPressed();

  }

  int getSelectedLine() {

    return selectedLine;

  }

}